/**
 * Created by LJY on 2017/3/19.
 */
import java.util.Scanner;
import static java.lang.System.out;

public abstract class GuessGame {
    public void go(){
        int number=(int) (Math.random()*10);
        int guess;
        do{
            print("输入数字：");
            guess=nextInt();
        }while (guess!=number);
        println("猜中了！");
    }
    public void println(String text){
        print(text+"\n");
    }
    public abstract void print(String text);
    public abstract int nextInt();
}
